John Brown (May 9, 1800 – December 2, 1859) was an American abolitionist who believed armed insurrection was the only way to overthrow the institution of slavery in the United States. During 1856 in Kansas, Brown commanded forces at the Battle of Black Jack and the Battle of Osawatomie. Brown’s followers also killed five pro-slavery supporters at Pottawatomie. In 1859, Brown led an unsuccessful raid on the federal armory at Harpers Ferry that ended with his capture. Brown’s trial resulted in his conviction and a sentence of death by hanging.

By John Bowles (1833-1900) (per User:Postdlf), said to have been taken in Kansas.
Source: Boston Aeteneum